bitzer

noun3

1. •
   (Australia, informal) A mongrel dog.
2. •
   (Australia, informal) A person of mixed race or ethnicity.

   • And a bit Welsh on your father's side. And a bit Irish. There's even some Chinese in there. You're a bitzer, Stevie. — 2017
3. •
   (slang) A bicycle assembled from bits and pieces.